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प्रश्न
The flask-shaped organ A at the centre of a flower is surrounded by a number of little stalks B having swollen tops which lie just inside the ring of petals.
(a) Name A. What are the various parts of A?
(b) Which part of A contains gametes?
(c) Name B. What is the swollen top of B known as?
(d) What does the swollen top of b contain?
(e) Out of A and B, which one is (i) male part, and (ii) female part of the flower?
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उत्तर
(a) A represents the carpel. The carpel is composed of the stigma, style and ovary.
(b) The ovary contains gametes in the form of ovules.
(c) B represents the stamen. The swollen tip of the stamen is the anther.
(d) The anther has pollen grains.
(e) The stamen (B) is a male part and the carpel (A) is a female part.
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संबंधित प्रश्न
Name the parts A, B and C shown in the diagram and write their functions.
"The chromosomal number of the sexually producing parents and their offspring is the same." Justify this statement.
Explain what you understand by sexual reproduction.
State the name of the functional unit concerned with sexual reproduction.
Fill in the following blank with suitable word :
The ovule becomes a .......... after fertilisation.
Explain the terms 'self pollination'
Explain the terms 'cross-pollination'?
Name the part of a seed which grows into root.
Which of the following statements are true for flowers?
(i) Flowers are always bisexual.
(ii) They contain sexual reproductive organs.
(iii) They are produced in all groups of plants.
(iv) after fertilization they give rise to fruits.
Multiple choice question. Tick (✓) the correct choice:
Unisexual flowers are found in
- mulberry
- mustard
- pea
- sunflower
Write one main difference between asexual and sexual mode of reproduction. Which species is likely to have comparatively better chances of survival – the one reproducing asexually or the one reproducing sexually? Give reason to justify your answer.
You have to perform the experiment, "To identify the different parts of an embryo of a gram seed." Describe the procedure that you would follow.
“Cell division is a type of reproduction in unicellular organism.” Justify.
Identify the odd. Stigma, Style, Pollen, Ovary.
Pollen grains are formed by _________ division in locules of anthers.
Draw a neat and labelled diagram.
Double fertilization in angiosperms
Which type of development is observed in male gametophytes of plants?
The flower of the Hibiscus plant is ______
Which out of the following processes does not lead to the formation of clones.
Double fertilization is exhibited by ______
